Approval Details

Valid E.O.


This Executive Order approved the specified parts on on January 25, 1994.
As of Thursday, October 17th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

1991-1994 GM trucks with a 5.0 to 7.4 liter V8 engine

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-231-6
  • Executive Order 231-6 / D231-6
  • ARB # D-231-6
  • Executive Order No: D-231-6
  • C.A.R.B. No. D-231-6
  • Resolution D-231-6
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-231-6 PDF

D-231-6 Document:

                                                                   (Page 1 of 3)

                                 State of California
                                AIR RESOURCES BOARD

                               EXECUTIVE ORDER D~231—6
                  Relating to Exemptions Under Section 27156
                             of the Vehicle Code

                                       WHIPPLE, INC.
                                      CALIBRATION PROM

Pursuant to the authority vested in the Air Resources Board (ARB) by Section
27156 of the Vehicle Code;      and

Pursuant to the authority vested in the undersigned by Sections 39515 and
39516 of the Health and Safety Code and Executive Order G—~45—5;

IT IS ORDERED AND RESOLVED:       That the installation of the Calibration PROM
manufactured by Whipple,   Inc. of 2063 Maple Ave., Costa Mesa, California
91731, has been found not to reduce the effectiveness of required motor
vehicle pollution control devices and, therefore, is exempt from the
prohibitions of Section 27156 of the Vehicle Code on those applicable
vehicles as listed in Table 1 of this Executive Order.

                                           Table 1

Application   Part #    Year          Engine         Trans       DPrive     Class

    SC        2013—A4   1993           5.0/5.7       Auto—M3O    2 & 4 WD   C/K 1500 LD

    sC        2014—A4   1991—93' 7 .4L               Auto—MT1l   2 WD       Motorhome HD

    SC        2015—A4   1991—93        7.4L          Auto—MT1l   2 WD       C1500 SS LD

    SsC       2016—A4   1991—93        7.4L          Auto—MTI    2 WD       C2500 & 3500 HD

    SC        2017—A4   1991—93        7.4L          Auto—MTLI   4 WD       C2500 & 3500 HD

    NA        2018—A4   1994           5. 72L        Auto—MTl    2 & 4 WD   C/XK 2500 & 3500 HD

    SC        2019—A4   1994           5. 7L         Auto—MTIl   2 & 4 WD   C/K 2500 & 3500 HD

    NA        2020—A4   1994           7 .4L         Auto—MTIl   2 & 4 WD   C/K 2500 & 3500 HD

    SC        2021—A4   1994           7 .4L         Auto—MTI1   2 & 4 WD   C/K 2500 & 3500 HD

    NA        2022—A4   1993—94        5.0/5.7L      Auto—M30    2 & 4 WD   C/K 1500 LD‘

    SC        2023—A4   1994           5.0/5.7L      Auto—M30    2 & 4 WD   C/K 1500 LD

SC=Supercharged, NA=Naturally Aspirated, M3O=4L60E Trans, MTI1l=4L80E Trans

This Executive Order is valid provided that installation instructions for the
Calibration PROM will not recommend tuning the vehicle to specifications
different from those submitted by the manufacturer.

wWHIPPLE,   INC.                          EXECUTIVE ORDER D—231—6
                                                 (Page 2 of 3)

Changes made to the design or operating conditions of the device, as
exempted by the ARB, that adversely affect the performance of a vehicle‘s
pollution control system shall invalidate this Executive Order.

Marketing of this device using an identification other than that shown in
this Executive Order or marketing of this device for an application other
than those listed in this Executive Order shall be prohibited unless prior
approval is obtained from the ARB.

This Executive Order does not constitute any opinidn as to the effect the
use of this device may have on any warranty either expressed or implied by
the vehicle manufacturer.

This Executive Order is granted based on results from emissions tests
conducted in accordance with Cold—Start CVS—75 Federal Test Procedure.
However, the ARB finds that reasonable grounds exist to believe that use of
the Calibration PROM may adversely affect emissions of motor vehicles when
operating under conditions outside the parameters of the previously
prescribed test procedures.  Accordingly, the ARB reserves the right to
conduct additional emission tests,   in the future,   as such tests are
developed, that will more adequately measure emissions from all cycle
phases.  If such test results demonstrate that the Calibration PROM
adversely affect emissions during off—cycle conditions (defined as those
conditions which are beyond the parameters of the Cold—Start CVS—75 Federal
Test Procedure)}, this Executive Order shall be effectively rescinded as of
the date the test results are validated.   Further, if such test results or
other evidence provides the ARB with reason to suspect that the Calibration
PROM will affect the durability of the emission control system, Whipple,
Inc. shall be required to submit durability data to show that the durability
of the vehicle emission control system is not, in fact, affected and/or that
the add—on or modified part demonstrates adequate durability.

In addition to the foregoing, the ARB reserves the right in the future to
review this Executive Order and the exemption provided herein to assure that
the exempted add—on or modified part continues to meet the standards and
procedures of Title 13,   California Code of Regulations,   Section 2222,   et
seq.               -


No claim of any kind, such as "Approved by the Air Resources Board" may be
made with respect to the action taken herein in any advertising or other
oral or written communication.

Section 17500 of the Business and Professions Code makes untrue or
misleading advertising unlawful, and Section 17534 makes violation
punishable as a misdemeanor.

Section 43644 of the Health and Safety Code provides as follows:

wWHIPPLE,   INC.                               '           EXECUTIVE ORDER D—231—6
                           '                                      (Page 3 of 3)

      "43644,      (a)         No person shall install,         sell, offer for sale, or
     advertise,      or,       except in an application to the state board for
     certification of a device, represent, any device as a motor vehicle
     pollution control device for use on any used motor vehicle unless that
     device has been certified by the state board.  No person shall sell,
     offer for sale, advertise, or represent any motor vehicle pollution
      control device as a certified device which, in fact,                   is not a certified
     device.       Any violation of this subdivision is a misdemeanor."

Any apparent violation of the conditions of this Executive Order may result
in its rescission or submission to the Attorney General of California for
such action as he deems advisable.

Executive Order D—231—4 is hereby superseded and is no longer of any force
or effect.

The Bureau of Automotive Repair will be notified by copy of this order.

Executed at El Monte,            California,       this   g%s/sz     f January 1994.

                                                          Assistant Division Chief
                                                          Mobile Source Division

Document Created: 2005-09-01 12:44:51
Document Modified: 2005-09-01 12:44:51

Previous E.O. D-231-5 | Previous E.O. D-230 | Next E.O. D-231-7 | Next E.O. D-232